Question

The marks obtained by ten students in a test of 20 marks are 10, 20 ,15, 13, 20, 19, 19, 10, 16,18. Find the mean of the data.​

Answer 1

Answer:

Step-by-step explanation:

sum of all numbers/ total units

10+20+15+13+20+19+19+10+16+18 divided by 10

160/10= 16 marks

Answer 2

EXPLANATION:

The given data is: 10, 20 ,15, 13, 20, 19, 19, 10, 16, 18. These are the marks taken by 10 students in a 20 marks test.

From the given data, we can observe that:

⇒ Number of observations = 10

[Since, These marks were taken by 10 students.]

Let us calculate sum of observations by adding the given data.

⇒ Sum of observations = 10 + 20 + 15 + 13 + 20 + 19 + 19 + 10 + 16 + 18

⇒ Sum of observations = 160

Finally, let us find mean of the data:

⇒ Mean = Sum of observations / Number of observations

⇒ Mean = 160 / 10

⇒ Mean = 16

Hence, the mean of the given data is 16.

MORE INFORMATION:

Mean is the average of numbers in a given data. If you have n numbers and want to find the mean, then add the n numbers and divide it by n.